If one target address is not local and its route is different than
default gateway, the specific route to this target address need be
added.
In this patch, get the route to the specific target address and store
it as cmdline, here is /etc/cmdline.d/45-route-static.conf. And the
route options are separated by underscore like below. Then the sotred
route can be parsed when kdump kernel boot up.
192.168.200.0/24_via_192.168.100.222_dev_ens10

I think it is a good idea to quote one example of "ip route show" where
there is one default route setting and one static route setting. I noticed
that you gave an example to Harald in your mail conversation.
default via 192.168.122.1 dev eth0 proto static metric 1024
192.168.200.0/24 via 192.168.100.222 dev ens10 proto static metric 1
Also, has harald accepted your patch. Has things been sorted out with
him for syntax of rd.route option?
Thanks
Vivek

On Fri, Jun 27, 2014 at 04:43:05PM +0800, Baoquan He wrote:
> If one target address is not local and its route is different than
> default gateway, the specific route to this target address need be
> added.
>
> In this patch, get the route to the specific target address and store
> it as cmdline, here is /etc/cmdline.d/45-route-static.conf. And the
> route options are separated by underscore like below. Then the sotred
> route can be parsed when kdump kernel boot up.
>
> 192.168.200.0/24_via_192.168.100.222_dev_ens10
I think it is a good idea to quote one example of "ip route show" where
there is one default route setting and one static route setting. I noticed
that you gave an example to Harald in your mail conversation.
default via 192.168.122.1 dev eth0 proto static metric 1024
192.168.200.0/24 via 192.168.100.222 dev ens10 proto static metric 1

Yes, this is better to help understand the scenario. Will add this in
new patch.

Also, has harald accepted your patch. Has things been sorted out with
him for syntax of rd.route option?

Will sent a new version with change to initramfs because Harald pointed
out my patch has an error on documentation. I guess he just doesn't like
this, not sure about it. Will update if his different diea is clear.